package com.itheima.reggie.controller;

import com.aliyuncs.utils.StringUtils;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.User;
import com.itheima.reggie.service.UserService;
import com.itheima.reggie.utils.SMSUtils;
import com.itheima.reggie.utils.ValidateCodeUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {

    @Autowired
    private UserService userService;

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 发送手机短信验证码
     * @param user
     * @return
     */
    @PostMapping("/sendMsg")
    private R<String> sendMsg(@RequestBody User user, HttpServletRequest request){
//        获取手机号
        String phone = user.getPhone();

        if(!StringUtils.isEmpty(phone)){
            //        生成随机的验证码
            String code = ValidateCodeUtils.generateValidateCode(4).toString();

            log.info("生成的验证码："+code);
//        调用阿里云提供的短信服务API完成发送短信
//        SMSUtils.sendMessage("瑞吉外卖", , phone,code );

//        需要将生成的验证码保存到Session
//            request.getSession().setAttribute(phone,code);

//            将验证码保存在redis中，设置时间为5分钟
            redisTemplate.opsForValue().set(phone,code,5, TimeUnit.MINUTES);

            return R.success("手机验证码短信发送成功");
        }
        return R.error("短信发送失败");
    }

    /**
     * 登录验证
     * @param map
     * @param session
     * @return
     */
    @PostMapping("/login")
    public R<User> login(@RequestBody Map map, HttpSession session){
        log.info(map.toString());
//        获取手机号码
        String phone = map.get("phone").toString();
//        获取验证码
        String code = map.get("code").toString();
//        从session中获取保存的验证码
//        Object codeInSession = session.getAttribute(phone);
//        从redis中获取保存的验证码
        Object codeInSession = redisTemplate.opsForValue().get(phone);
//        进行验证码比对
        if(codeInSession!=null&&codeInSession.equals(code)){
//            如果能对比成功，说明登录成功
            LambdaQueryWrapper<User> lqw=new LambdaQueryWrapper<>();
            lqw.eq(User::getPhone,phone);
            User user = userService.getOne(lqw);
            if(user==null){
//                判断当前手机号对应的用户是否为新用户，如果是新用户就自动完成注册
                user = new User();
                user.setPhone(phone);
                user.setStatus(1);
                userService.save(user);
            }
            session.setAttribute("user",user.getId());

//            如果用户登录成功，删除Redis中缓存的验证码
            redisTemplate.delete(phone);
            return R.success(user);
        }
        return R.error("登录失败");
    }

    @PostMapping("/loginout")
    public R<String> logout(HttpServletRequest request){
//        清理session中的用户id
        request.getSession().removeAttribute("user");
        return R.success("退出成功");
    }
}
